L.A. Confidential (1997)

Actors tend to do a lot of physical prep when they take on a role in a cop film, but it’s usually not quite like this. Russell Crowe’s character in L.A. Confidential is described as one of the biggest cops on the Los Angeles police force -- Crowe, however, is relatively short. In order to mentally prepare for his big role, Crowe moved into a tiny apartment that made him feel enormous, a tactic that helped him convincingly play his character, Bud White. Tom Cruise, take note.